No cleaning requiredFoam gun equipped with a valve. After use, simply rotate the valve and push out the remaining foam rather than using a cleanser. Therefore, you do not need to purchase the clean solution separately. Convenient to use: spring-loaded trigger and control knob allow you to precisely control the flow rate and adjust the distance diffusion. Ergonomic design: the foam gun is coated with polytetrafluoroethylene (PTFE) which can keep the gun clean and durable. Wide application: suitable for doors and windows of balcony, the bathtub and the air conditioning hole. Ideal for filling, sealing and insulating small spaces. Size: barrel length 198mm Color red Shipping quantity : 1 Welcometomeet